Spur gear rotating block for a toy construction set



FIG. 1 is a front perspective view of a spur gear rotating block for a toy construction set showing our new design;

FIG. 2 is a top plan view thereof;

FIG. 3 is a bottom plan view thereof;

FIG. 4 is a front elevation view thereof;

FIG. 5 is a rear elevation view thereof;

FIG. 6 is a right side elevation view thereof; and,

FIG. 7 is a left side elevation view thereof.

The broken lines in the figures are for environmental purpose only and form no part of the claimed design. 

CLAIM The ornamental design for a spur gear rotating block for a toy construction set, as shown and described. 